Adjustable tension device



C. W. SCHEESLEY.

ADJUSTABLE TENSION DEVICE.

APPLICATION FILED 0013. 1921.

1,437,200. Patented Nov. 28,1922

cmanns w. scnsnsnnr, or mm ,snoan, rnmrs rnvama, assron'on 'rosuseunsauna sun arms, or new roax, 11.1., acoaroaarrou or new. someADJUSTABLE 'rnnsron nnvrcn. 1

Application filed October 8, 198 1. Serial No. 505,053.

To all whom it may concern:

Be it known that I, Oman-1s Scanne- LnY, a citizen of" the United Statesresiding at Jersey Shore, m the county of llycoming and State ofPennsylvania, have invented' certain new and useful Improve ments inAdjustable Tension Devices, of which the following is a specification,reference being had therein to the accompanyi drawings.

his invention relates to an adjustable tension device for use inshuttles, and the object of the invention is the construction of asimple and efiicient tension device for automatic shuttles, whereb thethread for the shuttle will fall into 0th the thread ing block and thetension device as soon asthe pick of the shuttle is started.

Another object of the invention is the con struction of a tension devicefor shuttles,

which can be easily manipulated for causing the clamping elements orjaws to be ad justed for controlling the pressure and distance betweenthe two contiguous faces of.

the jaws, at the will of the operator.

-With the foregoing and other objects in view, my invention comprisescertain novel combinations, constructions and arrangements of parts aswill .be hereinafter described, illustrated in the accompanyingdrawings, and more particularly pointed out in the appended claims.

In the drawing: Figure 1 is a fragmentary, perspective view of ashuttle-body, showing my improved device mounted therein.

Figure 2 is a fragmentary view, in side elevation, of the shuttle-body.

Figure 3 is a sectional view, taken on line 3-3, Fig. 4, of the arrows.

Figure 4 is ,a sectional view, taken on line 44, Fig. 3, and looking inthe direction of the arrows.

Figure 5 is a perspective view of the sliding washer of the device.

Figure 6 is a fragmentary, bottom view of the threading block, showlngmy device mounted therein.

Referring to the drawings by numerals, 1 designates the shuttle-body, 2the threading block, and 3 the bobbin. In Fig. 1, the thread or filling4 is shown passing into and looking in the direction myrtension deviceand the threading block.

he preferred form of my tension device,

threading block. the washer from rotating, and allows the screw 10 to bethreaded into the washer,

' shown the drawings, comprises a primary'jaw 5, and an auxlliar jaw 6.These. jaws 5 and 6 are po'sitione in a compartment or ocket 7 formed inthe threading block 2. I he primary jaw 5 has some play or sidewisemovement in the compartment 7 The auxiliary jaw 6 is provided with anupper, curved end -8, so that the thread or filling falling down theslot 9, of the threadlng block-2 (Fig. 3) will be readily directedbetween jaws 5.21116. 6. Extending through the threading block 2 is arotatable member or screw 10; this screw 10. extends through the twojaws 5 and 6 and is threaded into the sliding washer 11. Thewasher 11 isprovided with a depending lug 12, which lug 12 slides in a oove 13formed in the he groove 13 prevents which will cause the Washerto rideor slide inwardly compressing the coil spring l4,

thereby adjusting the auxiliary aw 6, de-

pending upon therotation of screw 10. In ig. 6, the washer 11 is shownpartly extending into compartment 7, whereas in Fig. 3, the washer is atthe innermost position upon screw 10. This Fig. 6 illustrates thepositioning of the washer 11 toward the auxiliary jaw 6 by the rotationof the screw 10.

I have found from practical experience that the tension of the devicecan be quickly and easily adjusted to obtain great accuracy, and thedevice can be adjusted through the medium. of screw 10, to accommodatedifierent fillings or threads, as the case may be. A

It is to be understood that the jaws are operated by the screwprincipally for controlling the pressure on the thread, and,

incidentally, for adjusting the distance between the two jaws, sincepressure will only be exerted on the filling when the distance betweenthe jaws is restricted according to the size of the thread or filling.

In the -foregoing description, I have designated 5 and 6 as jaws, but Ido not limit these elements to any specific term, for the word jaws isused in a broad sense, meang j bl ks, or thread 01 filling engagingelements, or the like.

While I have described the preferred embodiment of my invention, andhave illustrated the same in the accompanying draw i within the scope ofthe appended claims,

whlchthis invention relates, during the extensive manufacture of thesamev and I,

therefore, reser,ve the right to make such alterations or changes asshall fairly fall What I claim is: 1.. In a device of the classdescribed, the combination with a threading block, of a.

- screw extending across said threading block,

jaws looselymounted on' said screw, a washer on said threading block andthreaded 'upon mounted on the screw. I

the screw, said washer and threading block provided with means forpreventing rotation of the washer, and a coil sprin interposed betweensaid washer and one of t e awe and 2. In a device of the'classdescribed, the

combination with a threading block, of a:

screw extendin across said threadi block, a washer threa ed upon one endofsald screw and adapted to slide transversel of the threading block,means for preventmg rotary movement of the washer, a pair of aws on saidscrew, and a spring pressing at one end against the, washer and at itsother end threa ed on said screw and provided with a threading, block,jaws engaging said screw a slot extending thereinto an against one ofthe jaws.

- 3. In a deviceof'the class described, the I combination of a threadingblock provided with a compartment and a groove, a screw extending acrosssaid threading. block and havin a portion above said groove, a washerlug, said lug positioned in'said groove of the and a spring between thewasher and one o the jaws, w ereby whenthe screw is rotated the washerwill be caused to move along the screw for controlling pressure on thespring. 4. In a device of the character described, the combination of athreadin block having 5 communicating with an internal compartment, arotatable screw carried by said threading block and extendingtransversely through said compartment, a Hat vertically extendingprimary tending contiguous to the primary jaw, saidprimar jaw. having acurved upper end project ng-away-from the primer aw and below said slot,whereby thread if ing down the slot will readily fall between the jaws,

and a compression means carried upon the inner end of the screw to bearupon .s'aid auxiliary jaw, as and for the purposes set forth. I

5. In a device of the character described, the combination of a threadinblock having a slot extending thereinto and communicating with aninternal compartment, a rotatable screw carried by said threading blockitnd extending transversely through said compartment a flat verticallyextending primary jaw loosely mounted upon, said screw within saidcompartment, said primary jaw extending to one side ofv said slot,'aflat vertically extendin' auxiliary jaw loosely mounted upon "sai screwwithin said compartment, the body portion of theauxiliary jaw extendingcontiguous to the primary aw, said prima ry-jaw having a curved upperend projectin away from the primary jaw and below Smd' slot, wherebythread falling down the slot will readil fall between the jaws, a washerthreade u on the inner end of said screw' and slidab e transversely ofsaid threading-block, said threading block having a transverse groovecommunicating with said compartment, said washer having a lug extendininto said groove, thereby keying said was er upon said threading block,a coil sprin carried upon said screw and bein interposed between saidwasher and said auxiliary jaw, as and for the purposes set forth.

In testimony whereof I hereunto aflix my signature.

CHARLES W. SCHEESLEY.

